1 files changed, 18 insertions, 8 deletions

diff --git a/platform/darwin/src/MGLBackgroundStyleLayer.mm b/platform/darwin/src/MGLBackgroundStyleLayer.mm
index caf8ca9681..bcad0aa11b 100644
--- a/platform/darwin/src/MGLBackgroundStyleLayer.mm
+++ b/platform/darwin/src/MGLBackgroundStyleLayer.mm
@@ -1,4 +1,4 @@
-// This file is generated. 
+// This file is generated.
 // Edit platform/darwin/scripts/generate-style-code.js, then run `make darwin-style-code`.
 
 #import "MGLSource.h"
@@ -62,8 +62,9 @@
 
 - (void)removeFromMapView:(MGLMapView *)mapView
 {
-    _pendingLayer = nullptr;
-    self.rawLayer = nullptr;
+    if (self.rawLayer != mapView.mbglMap->getLayer(self.identifier.UTF8String)) {
+        return;
+    }
 
     auto removedLayer = mapView.mbglMap->removeLayer(self.identifier.UTF8String);
     if (!removedLayer) {
@@ -86,28 +87,34 @@
 - (void)setBackgroundColor:(MGLStyleValue<MGLColor *> *)backgroundColor {
     MGLAssertStyleLayerIsValid();
 
-    auto mbglValue = MGLStyleValueTransformer<mbgl::Color, MGLColor *>().toPropertyValue(backgroundColor);
+    auto mbglValue = MGLStyleValueTransformer<mbgl::Color, MGLColor *>().toInterpolatablePropertyValue(backgroundColor);
     self.rawLayer->setBackgroundColor(mbglValue);
 }
 
 - (MGLStyleValue<MGLColor *> *)backgroundColor {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getBackgroundColor() ?: self.rawLayer->getDefaultBackgroundColor();
+    auto propertyValue = self.rawLayer->getBackgroundColor();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<mbgl::Color, MGLColor *>().toStyleValue(self.rawLayer->getDefaultBackgroundColor());
+    }
     return MGLStyleValueTransformer<mbgl::Color, MGLColor *>().toStyleValue(propertyValue);
 }
 
 - (void)setBackgroundOpacity:(MGLStyleValue<NSNumber *> *)backgroundOpacity {
     MGLAssertStyleLayerIsValid();
 
-    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toPropertyValue(backgroundOpacity);
+    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toInterpolatablePropertyValue(backgroundOpacity);
     self.rawLayer->setBackgroundOpacity(mbglValue);
 }
 
 - (MGLStyleValue<NSNumber *> *)backgroundOpacity {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getBackgroundOpacity() ?: self.rawLayer->getDefaultBackgroundOpacity();
+    auto propertyValue = self.rawLayer->getBackgroundOpacity();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<float, NSNumber *>().toStyleValue(self.rawLayer->getDefaultBackgroundOpacity());
+    }
     return MGLStyleValueTransformer<float, NSNumber *>().toStyleValue(propertyValue);
 }
 
@@ -121,7 +128,10 @@
 - (MGLStyleValue<NSString *> *)backgroundPattern {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getBackgroundPattern() ?: self.rawLayer->getDefaultBackgroundPattern();
+    auto propertyValue = self.rawLayer->getBackgroundPattern();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<std::string, NSString *>().toStyleValue(self.rawLayer->getDefaultBackgroundPattern());
+    }
     return MGLStyleValueTransformer<std::string, NSString *>().toStyleValue(propertyValue);
 }